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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: NACA Technical Memorandums
 Collection: National Advisory Committee for Aeronautics Collection
Technical Section of Aeronautics

Technical Section of Aeronautics

Date: February 1, 1923
Creator: Lesage, Andre
Description: The duties of the Technical Section are listed along with facilities for testing. Different categories of tests are discussed and some sample results included.
Contributing Partner: UNT Libraries Government Documents Department
Effect of viscosity in speed measurements with double-throat Venturi tubes

Effect of viscosity in speed measurements with double-throat Venturi tubes

Date: August 1, 1931
Creator: Peters, H
Description: In order to clarify the viscosity effect some experiments were made in the Gottigen low-pressure tunnel with the Bruhn double-throat Venturi tube. This type of tunnel makes it possible to vary the pressure and thereby the density within wide limits and consequently, to examine the viscosity effect. This, however, did not impair the results because pressure and temperature were determined at different periods.
Contributing Partner: UNT Libraries Government Documents Department
Spontaneous combustion of hydrogen

Spontaneous combustion of hydrogen

Date: December 1, 1923
Creator: Pothmann, PH & Nusselt, Wilhelm
Description: It is shown by the author's experiments that hydrogen which escapes to the atmosphere through openings in the system may burn spontaneously if it contains dust. Purely thermal reasoning can not account for the combustion. It seems to be rather an electrical ignition. In order to determine whether the cause of the spontaneous ignition was thermo-chemical, thermo-mechanical, or thermo-electrical, the experiments in this paper were performed.
Contributing Partner: UNT Libraries Government Documents Department
Tin soldering of aluminum and its alloys

Tin soldering of aluminum and its alloys

Date: October 1, 1921
Creator: Gallo, Gino
Description: A method is presented for soldering aluminum to other metals. The method adopted consists of a galvanic application to the surface of the light-metal parts to be soldered, of a layer of another metal, which, without reacting electrolytically on the aluminum, adheres strongly to the surface to which it is applied, and is, on the other hand, adapted to receive the soft solder. The metal found to meet the criteria best was iron.
Contributing Partner: UNT Libraries Government Documents Department
The protection of duralumin from corrosion

The protection of duralumin from corrosion

Date: March 1, 1927
Creator: Nelson, WM
Description: Different types of coatings to protect duralumin from corrosion are discussed. Plating, etching, brushing, coloring, painting and varnishing are all investigated.
Contributing Partner: UNT Libraries Government Documents Department
Structural details of the giant Dornier seaplane "Do X."

Structural details of the giant Dornier seaplane "Do X."

Date: January 1, 1930
Creator: Gustosa, Corrado
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Building a full-size glider

Building a full-size glider

Date: September 1, 1927
Creator: Camm, F J
Description: The building and flying of a glider is possible for anyone who can use a few basic tools. This report presents some plans and techniques for building your own glider.
Contributing Partner: UNT Libraries Government Documents Department
Experimental investigations concerning the limits of detonation in gaseous mixtures.  Part I

Experimental investigations concerning the limits of detonation in gaseous mixtures. Part I

Date: February 1, 1930
Creator: Wendlandt, Rudolf
Description: It is the purpose of this investigation to determine quantitatively the limits of detonation in gaseous mixtures for the conditions imposed and for a number of given gaseous explosive mixtures.
Contributing Partner: UNT Libraries Government Documents Department
Rules and regulations governing the Fokker Soaring-Flight Contest over water or level land

Rules and regulations governing the Fokker Soaring-Flight Contest over water or level land

Date: June 1, 1923
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Torsional vibration of aircraft engines

Torsional vibration of aircraft engines

Date: May 1, 1932
Creator: Lurenbaum, Karl
Description: Exhaustive torsional-vibration investigations are required to determine the reliability of aircraft engines. A general outline of the methods used for such investigations and of the theoretical and mechanical means now available for this purpose is given, illustrated by example. True vibration diagrams are usually obtained from vibration measurements on the completed engine. Two devices for this purpose and supplementing each other, the D.V.L. torsiograph and the D.V.L. torsion recorder, are described in this report.
Contributing Partner: UNT Libraries Government Documents Department